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ReactOS Development > Doxygen

DWORD GetParallelPortNumber ( IN HDEVINFO  DeviceInfoSet,
IN PSP_DEVINFO_DATA  DeviceInfoData 
)

Definition at line 172 of file classinst.c.

Referenced by InstallParallelPort().

{
    PCM_RESOURCE_LIST lpResourceList = NULL;
    PCM_PARTIAL_RESOURCE_DESCRIPTOR lpResDes;
    ULONG i;
    DWORD dwBaseAddress = 0;
    DWORD dwPortNumber = 0;

    TRACE("GetParallelPortNumber(%p, %p)\n",
          DeviceInfoSet, DeviceInfoData);

    if (GetBootResourceList(DeviceInfoSet,
                            DeviceInfoData,
                            &lpResourceList))
    {
        TRACE("Full resource descriptors: %ul\n", lpResourceList->Count);
        if (lpResourceList->Count > 0)
        {
            TRACE("Partial resource descriptors: %ul\n", lpResourceList->List[0].PartialResourceList.Count);

            for (i = 0; i < lpResourceList->List[0].PartialResourceList.Count; i++)
            {
                lpResDes = &lpResourceList->List[0].PartialResourceList.PartialDescriptors[i];
                TRACE("Type: %u\n", lpResDes->Type);

                switch (lpResDes->Type)
                {
                    case CmResourceTypePort:
                        TRACE("Port: Start: %I64x  Length: %lu\n",
                              lpResDes->u.Port.Start.QuadPart,
                              lpResDes->u.Port.Length);
                        if (lpResDes->u.Port.Start.HighPart == 0)
                            dwBaseAddress = (DWORD)lpResDes->u.Port.Start.LowPart;
                        break;

                    case CmResourceTypeInterrupt:
                        TRACE("Interrupt: Level: %lu  Vector: %lu\n",
                              lpResDes->u.Interrupt.Level,
                              lpResDes->u.Interrupt.Vector);
                        break;
                }

            }

        }

        HeapFree(GetProcessHeap(), 0, lpResourceList);
    }

    switch (dwBaseAddress)
    {
        case 0x378:
            dwPortNumber = 1;
            break;

        case 0x278:
            dwPortNumber = 2;
            break;
    }

    return dwPortNumber;
}

Generated on Sun May 27 2012 05:00:34 for ReactOS by doxygen 1.7.6.1

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